Rational Design of NiCo-borate/GO Heterojunction as a High-Performance Supercapacitor Electrode DOI
Pinghua Chen,

Huanghuang Song,

Zilong Zou

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(14), P. 6324 - 6334

Published: March 26, 2024

The bottleneck in the preparation of supercapacitors is how to develop high-energy and high-power-density devices by using appropriate materials. Herein, a novel NixCo3–x-B/GO heterostructure material was synthesized through simple ultrasonic precipitation method. prepared exhibits significant improvements supercapacitor performance than NixCo3–x-B. presence GO effectively suppresses excessive growth accumulation NixCo3–x-B; therefore, Ni2.7Co0.3-B/GO best as an electrode for supercapacitors: high specific capacitance (Cm, 1789.72 F g–1@1 A g–1) excellent rate performance. asymmetric (ASC) device Ni2.7Co0.3-B/GO//AC Cm 76.6 g–1, large voltage window 1.6 V, energy density (ED) 98.0 Wh kg–1. Furthermore, flexible, all-solid-state assembled with both positive negative electrodes demonstrates 46.9 g–1. Even after multiple folding bending at various angles, maintains performance, showcasing remarkable stability. With power (PD) 479.7 W kg–1, achieves ED 60.0 This work provides valuable insights into synergistic effects electrochemical processes based on

Language: Английский

Integrated Tandem Electrochemical‐chemical‐electrochemical Coupling of Biomass and Nitrate to Sustainable Alanine DOI Open Access
Jingcheng Wu, Leitao Xu, Zhijie Kong

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(45)

Published: Sept. 18, 2023

Alanine is widely employed for synthesizing polymers, pharmaceuticals, and agrochemicals. Electrocatalytic coupling of biomass molecules waste nitrate attractive the removal alanine production under ambient conditions. However, reaction efficiency relatively low due to activation stable substrates, two reactive intermediates remains challenging. Herein, we realize integrated tandem electrochemical-chemical-electochemical synthesis from biomass-derived pyruvic acid (PA) (NO3- ) catalyzed by PdCu nano-bead-wires (PdCu NBWs). The overall pathway demonstrated as a multiple-step catalytic cascade process via NH2 OH PA on catalyst surface. Interestingly, in this electrochemical-chemical-electrochemical process, Cu facilitates electrochemical reduction intermediates, which chemically couple with form oxime, Pd promotes oxime desirable alanine. This work provides green strategy convert NO3- wealth enriches substrate scope renewable feedstocks produce high-value amino acids.

Language: Английский

Citations

56
Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH2OH from NO species on Nanofiber Membranes Derived from NH2‐MIL‐53(Al) DOI

Runan Xiang,

Shihan Wang, Peisen Liao

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(45)

Published: Sept. 20, 2023

Pyridine oximes produced from aldehyde or ketone with hydroxylamine (NH2 OH) have been widely applied in pharmaceutics, enzymatic and sterilization. However, the important raw material NH2 OH exhibits corrosive unstable properties, leading to substantial energy consumption during storage transportation. Herein, this work presents a novel method for directly synthesizing highly valuable pyridine using situ generated electrocatalytic NO reduction well-design nanofiber membranes (Al-NFM) derived -MIL-53(Al). Particularly, 2-pyridinealdoxime, precursor of antidote pralidoxime (2-PAM) nerve agents suffering scarcity high cost, was achieved Faraday efficiency up 49.8 % yield 92.1 %, attributing selectivity production on Al-NFM, further easily reacted iodomethane produce 2-PAM. This study proposes creative approach, having wide universality other range functional groups, which not only facilitates conversion exhaust gas (NO) waste water (NO2- ) into chemicals especially utilization through electrochemistry, but also holds significant potential synthesis neuro detoxifying drugs humanity security.

Language: Английский

Citations

52
Relay Catalysis of Fe and Co with Multi‐Active Sites for Specialized Division of Labor in Electrocatalytic Nitrate Reduction Reaction DOI
Hongxia Luo, Shuangjun Li, Ziyang Wu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 8, 2024

Abstract Electrocatalytic nitrate reduction reaction (NO 3 RR) driven by renewable energy is a promising technology for the removal of nitrate‐containing wastewater. However, sluggish kinetics resulted from complex proton‐coupled electron transfer and various intermediates remain key barriers large‐scale application NO RR. Herein, tactic reported to raise rate RR increase selectivity N 2 using bimetal catalyst: Co inclined act on steps needed in process, rate‐determining step (RDS: *NO , asterisk means intermediates) subsequent *N hydrogenation as well Fe exhibits efficient activity selectivity‐ determining (SDS: then ) via relay catalysis mechanism. A efficiency 78.5% an ultra‐long cycle stability 60 cycles (12 h per cycle) are achieved FeCo alloy confined with nitrogen‐doped porous carbon nanofibers (FeCo‐NPCNFs). DFT calculations unveil that introduction active site not only regulates d‐band center alloy, optimizes adsorption intermediates, but also has strong capacity supply hydrogen species. Clearly, this study elucidates effects bimetallic performance electrocatalytic offers avenues designing Fe‐based catalysts realize nitrogen‐neutral cycle.

Language: Английский

Citations

49
Co/Co7Fe3 heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst for rechargeable zinc-air batteries DOI
Junkang Chen,

Yongyue Zhuang,

Yanxin Qiao

et al.

International Journal of Minerals Metallurgy and Materials, Journal Year: 2024, Volume and Issue: 32(2), P. 476 - 487

Published: Dec. 26, 2024

Language: Английский

Citations

37
Selective Electrocatalytic Conversion of Nitric Oxide to High Value‐Added Chemicals DOI Creative Commons
Dongdong Wang, Xue Feng Lu, Deyan Luan

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 25, 2024

The artificial disturbance in the nitrogen cycle has necessitated an urgent need for nitric oxide (NO) removal. Electrochemical technologies NO conversion have gained increasing attention recent years. This comprehensive review presents advancements selective electrocatalytic of to high value-added chemicals, with specific emphasis on catalyst design, electrolyte composition, mass diffusion, and adsorption energies key intermediate species. Furthermore, explores synergistic electrochemical co-electrolysis carbon source molecules, enabling synthesis a range valuable chemicals C─N bonds. It also provides in-depth insights into intricate reaction pathways underlying mechanisms, offering perspectives challenges prospects electrolysis. By advancing comprehension fostering awareness balance, this contributes development efficient sustainable systems from NO.

Language: Английский

Citations

30
Self‐Encapsulation of High‐Entropy Alloy Nanoparticles inside Carbonized Wood for Highly Durable Electrocatalysis DOI

Y Wang,

Yang Zhang,

Pengyu Xing

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: April 26, 2024

High-entropy alloy nanoparticles (HEAs) show great potential in emerging electrocatalysis due to their combination and optimization of multiple elements. However, synthesized HEAs often exhibit a weak interface with the conductive substrate, hindering applications long-term catalysis energy conversion. Herein, highly active durable electrocatalyst composed quinary (PtNiCoFeCu) encapsulated inside activated carbonized wood (ACW) is reported. The self-encapsulation achieved during Joule heating synthesis (2060 K, 2 s) where naturally nucleate at defect sites. In meantime, catalyze deposition mobile carbon atoms form protective few-layer shell rapid quenching process, thus remarkably strengthening stability between ACW. As result, HEAs@ACW shows not only favorable activity an overpotential 7 mV 10 mA cm

Language: Английский

Citations

30
Nitrogenous Intermediates in NOx‐involved Electrocatalytic Reactions DOI
Shunhan Jia, Limin Wu,

Hanle Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(15)

Published: Jan. 16, 2024

Abstract Chemical manufacturing utilizing renewable sources and energy emerges as a promising path towards sustainability carbon neutrality. The electrocatalytic reactions involving nitrogen oxides (NO x ) offered potential strategy for synthesizing various nitrogenous chemicals. However, it is currently hindered by low selectivity/efficiency limited reaction pathways, mainly due to the difficulties in controllable generation utilization of intermediates. In this minireview, focusing on intermediates NO ‐involved reactions, we discuss newly developed methodologies studying controlling generation, conversion, intermediates, which enable recent developments that yield products, including ammonia (NH 3 ), organonitrogen molecules, compounds exhibiting unconventional oxidation states. Furthermore, also make an outlook highlight future directions emerging field reactions.

Language: Английский

Citations

21
Mechanochemical route to fabricate an efficient nitrate reduction electrocatalyst DOI

Yunliang Liu,

Zhiyu Zheng,

Sobia Jabeen

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 4889 - 4897

Published: Feb. 8, 2024

Language: Английский

Citations

17
Purification and Value-Added Conversion of NOx under Ambient Conditions with Photo-/Electrocatalysis Technology DOI

Ruimin Chen,

Jielin Wang, Chunling Zhang

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

As primary air pollutants from fossil fuel combustion, the excess emission of nitric oxides (NOx) results in a series atmospheric environmental issues. Although selective catalytic reduction technology has been confirmed to be effective for NOx removal, green purification and value-added conversion under ambient conditions are still facing great challenges, especially nitrogen resource recovery. To address that, photo-/electrocatalysis offers sustainable routes efficient upcycling temperature pressure, which received considerable attention scientific communities. In this review, recent advances critically summarized. The target products reaction mechanisms systems, together with responsible active sites, discussed, respectively. Then, realistic practicability is proposed, including strict performance evaluation criteria application by photo-/electrocatalysis. Finally, current challenges future opportunities proposed terms catalyst design, enhancement, mechanism understanding, practical conditions, product separation techniques.

Language: Английский

Citations

2
Electrocatalytic Reductive Amination of Aldehydes and Ketones with Aqueous Nitrite DOI
Conor L. Rooney, Qi Sun, Bo Shang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

The electrocatalytic utilization of oxidized nitrogen waste for C-N coupling chemistry is an exciting research area with great potential to be adopted as a sustainable method generation organonitrogen molecules. most widely used reaction reductive amination. In this work, we develop alternative electrochemical amination that can proceed in neutral aqueous electrolyte nitrite the nitrogenous reactant and via oxime intermediate. We selection criterion reduction electrocatalysts suited electrosynthesis and, doing so, find Pd highly efficient catalyst reaction, reaching Faradaic efficiency 82% at -0.21 V vs reversible hydrogen electrode. aliphatic or aromatic structure carbonyl impacts efficacy catalyst, substrates leading suppressed formation detrimental alcohol. developed Pb/PbO electrocatalyst selectively performs electrolyte. With acetone model substrate, demonstrate one-pot, two-step conversion isopropyl amine 85% yield 50% global efficiency.

Language: Английский

Citations

2